We always used to book ROTS, but almost always ended up on the lowest deck possible, or extreme forward or extreme aft. No, I book my cabin. I prefer mid-ship.
Interesting to see others here say they book inside - I thought I was the only one. Everyone here talks about their balconies, this the first time I've seen others admit to being insiders. Even if I save $50 bucks by being inside .... it's $50 bucks saved! Also, I really do like the "blackout effect" of being inside. We don't really spend time in our cabin, so its just a place to sleep, shower, and dress.